<template>
  <div class="top-right-btn">
    <slot name="append"></slot>
    <el-tooltip v-if="tree" effect="dark" :content="showExtend ? '折叠' : '展开'" placement="top">
      <el-button size="mini" circle :icon="showExtend ? 'el-icon-turn-off' : 'el-icon-open'" @click="toggleExpend()"/>
    </el-tooltip>
    <el-tooltip v-if="search" effect="dark" :content="showSearch ? '简单搜索' : '高级搜索'" placement="top">
      <el-button size="mini" circle :icon="showSearch ? 'el-icon-zoom-out' : 'el-icon-zoom-in'"
                 @click="toggleSearch()"/>
    </el-tooltip>
    <el-tooltip effect="dark" content="刷新" placement="top">
      <el-button size="mini" circle icon="el-icon-refresh" @click="refresh()"/>
    </el-tooltip>
    <el-tooltip v-if="columns" effect="dark" content="显隐列" placement="top">
      <el-button size="mini" circle icon="el-icon-menu" @click="showColumn()"/>
    </el-tooltip>
    <el-dialog :title="title" :visible.sync="open" append-to-body>
      <el-transfer :titles="['显示', '隐藏']" v-model="value" :data="columns" @change="dataChange"/>
    </el-dialog>
  </div>
</template>
<script>
export default {
  name: "RightToolbar",
  data() {
    return {
      // 显隐数据
      value: [],
      // 弹出层标题
      title: "显示/隐藏",
      // 是否显示弹出层
      open: false,
    };
  },
  props: {
    tree: {
      type: Boolean,
      default: false,
    },
    search: {
      type: Boolean,
      default: true,
    },
    showSearch: {
      type: Boolean,
      default: true,
    },
    showExtend: {
      type: Boolean,
      default: false,
    },
    columns: {
      type: Array,
    },
  },
  computed: {
    style() {
      const ret = {};
      if (this.gutter) {
        ret.marginRight = `${this.gutter / 2}px`;
      }
      return ret;
    }
  },
  created() {
    // 显隐列初始默认隐藏列
    for (let item in this.columns) {
      if (this.columns[item].visible === false) {
        this.value.push(parseInt(item));
      }
    }
  },
  methods: {
    // 搜索
    toggleSearch() {
      this.$emit("update:showSearch", !this.showSearch);
    },
    toggleExpend() {
      this.$emit("expand");
    },
    // 刷新
    refresh() {
      this.$emit("queryTable");
    },
    // 右侧列表元素变化
    dataChange(data) {
      for (let item in this.columns) {
        const key = this.columns[item].key;
        // this.columns[item].visible = !data.includes(key);
      }
    },
    // 打开显隐列dialog
    showColumn() {
      this.open = true;
    },
  },
};
</script>
<style lang="scss" scoped>
.top-right-btn {
  display: flex;
}

::v-deep .el-transfer__button {
  border-radius: 50%;
  padding: 12px;
  display: block;
  margin-left: 0px;
}

::v-deep .el-transfer__button:first-child {
  margin-bottom: 10px;
}
</style>
